Hi,<br/><br/>1. Please tell how a person could tell if the underlined part is an adverbial that is necessitated by the verb 'has'.<br/><br/>He's <u>gone to the store</u>.<br/><br/>2. Also, how is that the underlined verb has to be 'have' and not 'has' when 'row' seems to be singular?<br/><br/>Stitching is a row of stitches that <u>have</u> been sewn in ...